4G Turbo-V Intel® FPGA IP User Guide

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ID 683882
Date 4/03/2023
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Document Table of Contents
Document Table of Contents x
1. About the 4G Turbo-V Intel® FPGA IP 2. Getting Started with 4G Turbo-V IP 3. Designing with the 4G Turbo-V Intel® FPGA IP 4. 4G Turbo-V Intel® FPGA IP Functional Description 5. Document Revision History for the 4G Turbo-V Intel® FPGA IP User Guide
1. About the 4G Turbo-V Intel® FPGA IP x
1.1. 4G Turbo-V Intel® FPGA IP Features 1.2. 4G Turbo-V Intel® FPGA IP Device Family Support 1.3. 4G Turbo-V IP Release Information 1.4. 4G Turbo-V Performance and Resource Utilization
2. Getting Started with 4G Turbo-V IP x
2.1. Installing and Licensing Intel® FPGA IP Cores
2.1. Installing and Licensing Intel® FPGA IP Cores x
2.1.1. Intel® FPGA IP Evaluation Mode 2.1.2. 4G Turbo-V IP Timeout Behavior
3. Designing with the 4G Turbo-V Intel® FPGA IP x
3.1. Generating a 4G Turbo-V IP 3.2. Simulating the IP with the RTL Simulator 3.3. Simulating a 4G Turbo-V IP with MATLAB 3.4. Simulating a 4G Turbo-V IP with C-Models
4. 4G Turbo-V Intel® FPGA IP Functional Description x
4.1. 4G Turbo-V Downlink Accelerator 4.2. 4G Turbo-V Uplink Accelerator 4.3. 4G Turbo-V Signals and Interfaces
4.1. 4G Turbo-V Downlink Accelerator x
4.1.1. Turbo Encoder 4.1.2. Rate Matcher 4.1.3. Input and Output Data Formats 4.1.4. Latency Calculations 4.1.5. Throughput Calculations
4.2. 4G Turbo-V Uplink Accelerator x
4.2.1. Turbo Decoder 4.2.2. Input and Output Data Formats 4.2.3. Latency Calculations 4.2.4. Throughput Calculations
4.3. 4G Turbo-V Signals and Interfaces x
4.3.1. Avalon Streaming Interfaces in DSP Intel FPGA IP
1. About the 4G Turbo-V Intel® FPGA IP
2. Getting Started with 4G Turbo-V IP
3. Designing with the 4G Turbo-V Intel® FPGA IP
4. 4G Turbo-V Intel® FPGA IP Functional Description
5. Document Revision History for the 4G Turbo-V Intel® FPGA IP User Guide

4.2.1. Turbo Decoder

The Turbo decoder consists of two single soft-in soft-out (SISO) decoders, which work iteratively. The output of the first (upper decoder) feeds into the second to form a Turbo decoding iteration. Interleaver and deinterleaver blocks re-order data in this process.
Figure 9. Turbo Decoder Block Diagram

The Turbo decoder supports the MaxLogMAP decoding algorithm. This algorithm is a simplified version of LogMAP that uses less logic resource and offers slightly reduced BER performance relative to LogMAP.

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